ESDCFII: Extreme MMC, SDHC, SD to CF Type II Adapter Supports SD cards with various kinds of form factor, including SDHC / SD / miniSDHC (with adapter) / miniSD (with adapter) / microSDHC (with adapter) / microSD (with adapter) / TransFlash (with adapter). SD 3.0 ready; accept SD 3.0 card with exFAT file system on Windows OS. Supports CF true IDE mode, memory mode, and I/O mode. High-speed CF interface with extreme performance. Supports Windows / Mac OS / Linux. NEED CF type II slot. (CF type I slot can not hold this adapter)